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/* This file is part of the KDE project
SPDX-FileCopyrightText: 2010 KO GmbH <ben.martin@kogmbh.com>
SPDX-License-Identifier: LGPL-2.0-or-later
*/
#include "KoTextRdfCore.h"
#include "TextDebug.h"
#include <KoStoreDevice.h>
#include <KoXmlWriter.h>
#include <QFile>
using namespace Soprano;
bool KoTextRdfCore::saveRdf(QSharedPointer<Soprano::Model> model,
Soprano::StatementIterator triples,
KoStore *store,
KoXmlWriter *manifestWriter,
const QString &fileName)
{
bool ok = false;
if (!store->open(fileName)) {
return false;
}
KoStoreDevice dev(store);
QTextStream oss(&dev);
QString serialization = "application/rdf+xml";
const Soprano::Serializer *serializer = Soprano::PluginManager::instance()->discoverSerializerForSerialization(Soprano::SerializationRdfXml);
if (serializer) {
QString data;
QTextStream tss(&data);
if (serializer->serialize(triples, tss, Soprano::SerializationRdfXml)) {
tss.flush();
oss << data;
debugText << "fileName:" << fileName << " data.sz:" << data.size();
debugText << "model.sz:" << model->statementCount();
ok = true;
} else {
debugText << "serialization of Rdf failed!";
}
}
oss.flush();
store->close();
manifestWriter->addManifestEntry(fileName, "application/rdf+xml");
return ok;
}
bool KoTextRdfCore::createAndSaveManifest(QSharedPointer<Soprano::Model> docmodel,
const QMap<QString, QString> &idmap,
KoStore *store,
KoXmlWriter *manifestWriter)
{
QSharedPointer<Soprano::Model> tmpmodel(Soprano::createModel());
QMap<QString, QString>::const_iterator iditer = idmap.constBegin();
QMap<QString, QString>::const_iterator idend = idmap.constEnd();
for (; iditer != idend; ++iditer) {
QString oldID = iditer.key();
QString newID = iditer.value();
debugText << "oldID:" << oldID << " newID:" << newID;
QString sparqlQuery;
QTextStream queryss(&sparqlQuery);
queryss << ""
<< "prefix pkg: <http://docs.oasis-open.org/ns/office/1.2/meta/pkg#> \n"
<< ""
<< "select ?s ?p ?o \n"
<< "where { \n"
<< " ?s pkg:idref ?xmlid . \n"
<< " ?s ?p ?o . \n"
<< " filter( str(?xmlid) = \"" << oldID << "\" ) \n"
<< "}\n";
Soprano::QueryResultIterator it = docmodel->executeQuery(sparqlQuery, Soprano::Query::QueryLanguageSparql);
while (it.next()) {
Soprano::Node pred = it.binding("p");
Soprano::Node obj = it.binding("o");
if (pred.toString() == "http://docs.oasis-open.org/ns/office/1.2/meta/pkg#idref") {
debugText << "changing idref, oldID:" << oldID << " newID:" << newID;
obj = Node::createLiteralNode(newID);
}
Statement s(it.binding("s"), pred, obj);
tmpmodel->addStatement(s);
}
}
debugText << "exporting triples model.sz:" << tmpmodel->statementCount();
// save tmpmodel as manifest.rdf in C+P ODF file.
Soprano::StatementIterator triples = tmpmodel->listStatements();
bool ret = saveRdf(tmpmodel, triples, store, manifestWriter, "manifest.rdf");
return ret;
}
bool KoTextRdfCore::loadManifest(KoStore *store, QSharedPointer<Soprano::Model> model)
{
bool ok = true;
QString fileName = "manifest.rdf";
if (!store->open(fileName)) {
debugText << "Entry " << fileName << " not found!";
return false;
}
Soprano::Node context(QUrl("http://www.calligra.org/Rdf/path/" + fileName));
QUrl BaseURI = QUrl("");
debugText << "Loading external Rdf/XML from:" << fileName;
QString rdfxmlData(store->device()->readAll());
const Soprano::Parser *parser = Soprano::PluginManager::instance()->discoverParserForSerialization(Soprano::SerializationRdfXml);
Soprano::StatementIterator it = parser->parseString(rdfxmlData, BaseURI, Soprano::SerializationRdfXml);
QList<Statement> allStatements = it.allElements();
debugText << "Found " << allStatements.size() << " triples...";
foreach (const Soprano::Statement &s, allStatements) {
Error::ErrorCode err = model->addStatement(s.subject(), s.predicate(), s.object(), context);
if (err != Error::ErrorNone) {
debugText << "Error adding triple! s:" << s.subject() << " p:" << s.predicate() << " o:" << s.object();
ok = false;
break;
}
}
store->close();
return ok;
}
void KoTextRdfCore::dumpModel(const QString &msg, QSharedPointer<Soprano::Model> m)
{
#ifndef NDEBUG
QList<Soprano::Statement> allStatements = m->listStatements().allElements();
debugText << "----- " << msg << " ----- model size:" << allStatements.size() << Qt::endl;
foreach (const Soprano::Statement &s, allStatements) {
debugText << s;
}
#else
Q_UNUSED(msg);
Q_UNUSED(m);
#endif
}
QList<Soprano::Statement> KoTextRdfCore::loadList(QSharedPointer<Soprano::Model> model, Soprano::Node ListHeadSubject)
{
Node rdfNil = Node::createResourceNode(QUrl("http://www.w3.org/1999/02/22-rdf-syntax-ns#nil"));
Node rdfFirst = Node::createResourceNode(QUrl("http://www.w3.org/1999/02/22-rdf-syntax-ns#first"));
Node rdfRest = Node::createResourceNode(QUrl("http://www.w3.org/1999/02/22-rdf-syntax-ns#rest"));
Soprano::Node listBNode = ListHeadSubject;
QList<Statement> ret;
debugText << "finding all nodes in the list...";
while (true) {
ret << model->listStatements(listBNode, rdfFirst, Node()).allElements();
Soprano::Node obj = KoTextRdfCore::getObject(model, listBNode, rdfRest);
debugText << "ret:" << ret;
debugText << "rest:" << obj;
if (!obj.isValid()) {
break;
}
if (obj.toString() == rdfNil.toString()) {
break;
}
listBNode = obj;
}
return ret;
}
static void removeList(QSharedPointer<Soprano::Model> model, Soprano::Node ListHeadSubject)
{
Node rdfNil = Node::createResourceNode(QUrl("http://www.w3.org/1999/02/22-rdf-syntax-ns#nil"));
Node rdfFirst = Node::createResourceNode(QUrl("http://www.w3.org/1999/02/22-rdf-syntax-ns#first"));
Node rdfRest = Node::createResourceNode(QUrl("http://www.w3.org/1999/02/22-rdf-syntax-ns#rest"));
//
// Chain down the list recursively so we delete from
// the list tail back to the head.
//
Soprano::Node obj = KoTextRdfCore::getObject(model, ListHeadSubject, rdfRest);
if (obj.isValid()) {
if (obj.toString() != rdfNil.toString()) {
removeList(model, obj);
}
}
model->removeAllStatements(ListHeadSubject, rdfFirst, Node());
model->removeAllStatements(ListHeadSubject, rdfRest, Node());
}
void KoTextRdfCore::saveList(QSharedPointer<Soprano::Model> model, Soprano::Node ListHeadSubject, QList<Soprano::Node> &dataBNodeList, Soprano::Node context)
{
Node rdfNil = Node::createResourceNode(QUrl("http://www.w3.org/1999/02/22-rdf-syntax-ns#nil"));
Node rdfFirst = Node::createResourceNode(QUrl("http://www.w3.org/1999/02/22-rdf-syntax-ns#first"));
Node rdfRest = Node::createResourceNode(QUrl("http://www.w3.org/1999/02/22-rdf-syntax-ns#rest"));
debugText << "header:" << ListHeadSubject.toString();
debugText << "list.sz:" << dataBNodeList.size();
debugText << "context:" << context.toString();
removeList(model, ListHeadSubject);
Soprano::Node listBNode = ListHeadSubject;
Soprano::Node prevListBNode;
foreach (const Soprano::Node &dataBNode, dataBNodeList) {
// Link the list in Rdf
model->addStatement(listBNode, rdfFirst, dataBNode, context);
if (prevListBNode.isValid()) {
debugText << "prev:" << prevListBNode << " current:" << listBNode;
model->addStatement(prevListBNode, rdfRest, listBNode, context);
}
prevListBNode = listBNode;
listBNode = model->createBlankNode();
}
debugText << "at end, prev.isValid:" << prevListBNode.isValid();
if (prevListBNode.isValid()) {
model->addStatement(prevListBNode, rdfRest, listBNode, context);
}
model->addStatement(listBNode, rdfRest, rdfNil, context);
}
void KoTextRdfCore::removeStatementsIfTheyExist(QSharedPointer<Soprano::Model> m, const QList<Soprano::Statement> &removeList)
{
foreach (const Soprano::Statement &s, removeList) {
StatementIterator it = m->listStatements(s.subject(), s.predicate(), s.object(), s.context());
QList<Statement> allStatements = it.allElements();
foreach (const Soprano::Statement &z, allStatements) {
debugText << "found:" << z;
m->removeStatement(z);
}
}
}
Soprano::Node KoTextRdfCore::getObject(QSharedPointer<Soprano::Model> model, Soprano::Node s, Soprano::Node p)
{
QList<Statement> all;
all = model->listStatements(s, p, Node()).allElements();
if (all.isEmpty()) {
return Soprano::Node();
}
return all.first().object();
}
QByteArray KoTextRdfCore::fileToByteArray(const QString &fileName)
{
QFile t(fileName);
t.open(QIODevice::ReadOnly);
return t.readAll();
}
QString KoTextRdfCore::getProperty(QSharedPointer<Soprano::Model> m, Soprano::Node subj, Soprano::Node pred, const QString &defval)
{
StatementIterator it = m->listStatements(subj, pred, Node());
QList<Statement> allStatements = it.allElements();
foreach (const Soprano::Statement &s, allStatements) {
return s.object().toString();
}
return defval;
}
QString KoTextRdfCore::optionalBindingAsString(Soprano::QueryResultIterator &it, const QString &bindingName, const QString &def)
{
if (it.binding(bindingName).isValid()) {
return it.binding(bindingName).toString();
}
return def;
}
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